Question

find an exponential function of the form f (×)=ab^-× +c that has a horizontal asymptote y = 57, a Y intercept 219 and passes through point to (2,107)

Answer 1

put 2 and 107 as your x y, then put it in that equation
f(x)=ab^-x +c.

to find c put as your y intercept but you have two posibilities: a can be 1 or can be a higher number an your c is lower, in other words when x=0
a+c=107 if you need more help just comment